package com.freewebsys.sns.service.imp;
import java.util.List;
import java.util.Map;
import java.util.Date;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import org.springframework.transaction.annotation.Transactional;
import com.freewebsys.core.dao.BaseDao;
import com.freewebsys.core.page.PageConf;
import org.springframework.beans.factory.annotation.Autowired;
import com.freewebsys.sns.pojo.Blog;
import com.freewebsys.sns.pojo.Feed;
import com.freewebsys.sns.pojo.FeedUser;
import com.freewebsys.sns.service.FeedService;
import com.freewebsys.sns.service.FeedException;
import com.freewebsys.sns.pojo.UserInfo;
import com.opensymphony.xwork2.ActionContext;
public class FeedServiceImp implements FeedService {
@Autowired
private BaseDao baseDao;
/**
* Feed删除
*/
@Override
@Transactional
public void deleteFeedById(Integer id, UserInfo userInfo)
throws FeedException {
try {
FeedUser feedUser = (FeedUser) baseDao.findById(FeedUser.class, id);
baseDao.delete(feedUser);
} catch (Exception e) {
throw new FeedException("Feed删除异常");
}
}
@Override
@Transactional
public PageConf findFeedPiecePageList(int start, int limit,
UserInfo userInfo, String type) throws FeedException {
try {
PageConf conf = null;
if (type != null && !type.equals("all")) {
String hql = " select module from FeedUser module left join fetch module.feed where module.userId = ? and module.feedType = ? ";
// 通用查询匹配
conf = baseDao.findPage(start, limit, hql, userInfo.getId(),
type);
} else {// 查询全部
String hql = " select module from FeedUser module left join fetch module.feed where module.userId = ? ";
// 通用查询匹配
conf = baseDao.findPage(start, limit, hql, userInfo.getId());
}
return conf;
} catch (Exception e) {
throw new FeedException("查询Feed全部异常");
}
}
/**
* Feed保存 使用线程后台执行
*/
@Override
@Transactional
public void saveFeed(Object obj) throws FeedException {
try {
HttpServletRequest request = (HttpServletRequest) ActionContext
.getContext().get(ServletActionContext.HTTP_REQUEST);
UserInfo userInfo = (UserInfo) request.getSession().getAttribute(
UserInfo.USER_SESSION);
// 调用内部类
FeedServiceThread feedServiceThread = new FeedServiceThread(obj,
userInfo);
feedServiceThread.start();
} catch (Exception e) {
e.printStackTrace();
}
}
// 定义内部类单独执行一个线程
class FeedServiceThread extends Thread {
private Object obj;
private UserInfo userInfo;
public FeedServiceThread(Object obj, UserInfo userInfo) {
super();
this.obj = obj;
this.userInfo = userInfo;
}
@Override
public void run() {
System.out.println("开始记录动态.");
Feed feed = new Feed();// 动态
feed.setCreateTime(new Date());// 设置时间
feed.setUserId(this.userInfo.getId());// 用户Id
feed.setUserName(this.userInfo.getName());// 用户名
if (this.obj instanceof Blog) {// 当类型是日志
feed.setFeedType("blog");
Blog blog = (Blog) this.obj;
feed.setTitleData(blog.getTitle());
String html = "";
if (blog.getContent() != null
&& blog.getContent().length() > 200) {
// 取前200 个字符
html = blog.getContent().substring(0, 200);
} else if (blog.getContent() != null) {
html = blog.getContent();
}
feed.setContentData(html);
baseDao.save(feed);
}
// 保存用户的好友
FeedUser feedUser = new FeedUser();
feedUser.setFeedType("blog");
feedUser.setFeed(feed);
feedUser.setUserId(this.userInfo.getId());
baseDao.save(feedUser);
try {
} catch (Exception e) {
System.out.println("动态记录异常！");
e.printStackTrace();
}
}
}
}